Bobbin receiver with movable bottom



Nov. 26, 1946. I R. s. TURNER 2,411,643

- BQBBIN RECEIVER WITH MOVABLE BOTTOM I 7 Filed Dec. 22, 1945 Sheets-Sheet l Fla-2 .INVENTOR ATTORNEY RICHARD 6. TURNER' Nov. 26, 1946. I R. cs, TURNER 2,411,643

BOBBIN RECEIVER WITH MOVABLE BOTTOM Filed Dec. 22, 1945 2 Sheets-Sheet 2 FIG-5 ,so I

FIG-6 FIG-7 INVENTOR RICHARD a. TURNER QZQTFM ATTORNEY Patented Nov. 26, 1946 n-ge STATES PATENT" OFFICE BoBBlN REcEIvER WITH MOVABLE BOTTOM Richard G. 'I- urner, Worcester, Mass, assignor to. Crompton & Knowles Loom Works, Worcester,

Mass, a corporation of Massachusetts Application December 22, 1945, Serial No. 636,943

11 Claims. 1

This invention relates to. improvements in bobbin receivers for weft replenishing looms and it is the general object of the invention to provide the receiver with a cloth, bag having a depressible. bottom.

Inweft replenishingloomsthe depleted bobbins are ordinarily discharged downwardly from the shuttlev along a chute on the lay and toward a receiver; Itis desirablethat the receiver have as large a bobbin holding capacity as possible without interfering with its return to normal position after-being emptiedzof bobbins. It is an important object of my present invention to provid a receiver having an elastically mounted bottom whichwill be elevated when the receiver is empty so that it can be returned conveniently to its normal position. As, bobbins accumulate their weight depresses the bottom to increase the capacity of the receiver.

With these and other objects in viewwhich will appear as the description proceeds, my invention resides in the: combination and arrangement of parts hereinafter described and set forth.

In the accompanying drawings, wherein two forms of the invention are set forth,

Fig. 1 is a side elevationof the forward part of a loom having the preferred form of my invention applied thereto,

Fig. 2is a front elevation looking in the direction of arrow 2. Fig. 1,

Fig. 3 is a vertical section on line 33 of Fig. 1,

. Figs. 4, 5 and 6 are diagrammatic views indicatin the manner in which the receiver can be manipulatedwhen it is being emptied of bobbins and returnedto normal position, and r Fig. 7 is 'a view similar to Fig. 1 but showing the modified form of the invention.

Referring particularly to Figs, 1, 2 and 3, the loomframe l supports a lay il provided with a shuttle part of box I 2 to receive a shuttle S. Mounted on the lay and depending from the shuttle; box is abobbin chute l3 which guides bobbins discharged from the shuttle downwardly and forwardly. The lay; ordinarily reciprocates backwardly and forwardly and causes the chute to move along a path the; front part of which. will ordinarily extend over part of the bobbin receiver R.

In carrying my present invention into effect I secure'asupport l tothe loomsideas at It .at a lowposition on the .loom. The support l5 has a horizontal low supporting bar or member I! provided with anupwardly opening bearing recess l8. A second bar or member 19 above bar I! serves asa'support for the metal frame; designated 2 generally at F;' The support is in fixed position and bar I!) may have secured to the upper part thereof aforwardly extending spring clip 20.

The frame F has right'and left side members 2.5..- and 2.6, respectively; as viewed in Fig. 3, each provided at its upper end with a rearwardl-y ex:- tending arm 21'. The bottoms of the side 'members are connected by a bottom member 28' preferably integral with the side bars and normally lying in the recess l8. A cross bar 29 connects the side. members and extends in front of bar I9 when theparts are in the position shown in Fig. 1.. A second upper cross bar 30 joins the upper parts of side members 25 and 26and serves as a hand hold when the receiver is being inverted.

The. bag B may be made of cloth or suitable: flexible material and has an upwardly opening mouth M through which bobbins pass as they descend from the chute IS. The bag has front and back walls 35. and 36, respectively, and inner and? outer side walls 31' and 38', respectively. These walls are joined at their lower ends to a flatplate 40. which may be made of any convenient material, such as plastic, cemented and otherwise secured to the edges of the bag,

In the preferred form of the invention the plate at is connected to four elastics. 42 located within the bag, one elastic for each corner of the plate. These elastics have their upper ends'attached as at 43 to inside parts of the bag and have their lower ends attachedas at 44' to the plate 40. The normal effect of the elastics is to draw the bottom of the bag upwardly to the position indicated in full lines in Fig. 1. Upward movement of the front part of the bottom will ordinarily be limited by straps 45 sewed or otherwise secured to the front wall of the bag and looped around-the bottom cross bar 9. There are no corresponding straps for the back ofthe bag and' the rear part of the floor may rise to a level above that of its front part, although this is not an essential relationship. Other straps 46 secured to the front wall of the bag are looped through the top cross bar 30, and top straps 41 secured to the top edgesof the bag extend around the arms 21..

Under normal conditions the frame F will be in the position shown in Fig, 1 and the spring clip 20' will project forwardly from the cross bar I9- and overthe bar 29, thereby assisting gravity in 3 the cross bar l9, The bag will be suspended from the arms 21 and will be held against rearward movement relative to frame F by the strap 45 and 46. The parts are so proportioned that the bottom 40 will be slightly above the level of the cross bar [9 when the bag is empty.

As successive weft replenishing operations of the loom occur bobbins will accumulate in the bag and their weight will depress the bottom 40 against the action of the elastics 42. Durin this accumulation of bobbins the bottom of the bag will descend gradually and will ultimately reach the position indicated in dotted lines in Fig. 1 when a large number of bobbins are present.

When the receiver is to be emptied it will be pulled forwardly as indicated in Fig. 4, the cross bar 29 becoming disengaged from the spring clip 2!! and the bottom member 28 of the frame F turning with a pivotal movement relatively to the bottom of recess l8. During this forward movement the lower part of the bag will be behind the cross bar l9, but due to flexibility of the bag the latter will be dragged up over the bar I!) until the frame is free of the clip 20, after which the receiver can be completely removed from the support l5 by an upward motion and turned to the inverted position shown in Fig. 5 to empty the bobbins. When in the position of Fig. 5 the bobbins will descend along the direction of arrow I) and the bottom will be drawn downwardly toward the mouth M by the elastics, the latter assisting in discharging the bobbins from the bag. After the bag is empty the bottom member 28 will be reinserted into the recess I8 and the elastics will again have restored the bottom 40 to its high position. Because of this latter fact the frame F can be rocked rearwardly and the bottom 40 will pass over cross bar is of the support I 5. If desired the elastics 42 for the rear part of the plate 40 can be made to lift the rear part of the bottom somewhat higher than the front part as already mentioned hereinbefore so that said bottom will be inclined to insure easy sliding thereof over support 15.

In the modified form of the invention the bag will be as already described except for the elastics. The latter, indicated at 5!] in Fig. 7, will be outside the bag and will be attached to it and the bottom plate 40 in such manner that they will not be injured by the support l5 when the receiver is swung forwardly. This result may be accomplished by attaching the upper ends of the front elastics 55] to theside walls of the bag, as at 5!, and attaching their lower ends to the floor 40 at points behind the front wall of the bag, as at 52. Elastics 50 operate as do the elastics 42, but being outside the bag they will not contact the bobbins or become entangled with them.

From the foregoing it will be seen that I have provided a simple form of bobbin receiver for weft replenishing looms wherein a flexible bobbin holding bag is provided with a bottom the height of which is determined by the weight of the bobbins in the bag. After the bag has been emptied the elastics move the bottom of the bag to its high position to enable it to pass over the support l5 when the receiver is returned to its normal position on the loom. As the bobbins accumulate they depress the plate 40 and the capacity of the bag is automatically increased. If desired, the bottom 48 can be inclined downwardly and forwardly to facilitate movement of the bag to its normal position on the support l5 after being emptied. If by any circumstance the front end of the plate 40 should remain up on the bar 19 the accumulating weight of the bobbins will tip the back of the floor 40 downwardly, causing it to become inclined and 5 eventually slide off the bar l9.

Having thus described my invention it will be seen that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is:

1. In a weft replenishing loom having a support extending laterally therefrom, a bobbin receiver comprising a frame mounted on the front of said support for backward and forward movement thereon, and a bobbin holder supported on said frame and extending rearwardly of the support, and means supporting the bottom of said holder at a level above the top of said support when the frame is in normal position on said support and the holder is empty, said means effective to permit downward movement of the bottom of the holder to a level below the top of said support to increase the capacity of said holder as bobbins accumulate therein.

2. In a weft replenishing loom having a support extending laterally therefrom, a frame on the front of the support mounted for backward and forward movement relatively to the support, a bobbin holder mounted on said frame and extending rearwardly of said support, and extensible means connected to the bottom of said holder effective when the latter is empty to hold said bottom above the level of said support, said bottom moving down to a level below the top of said support against the action of said extensible means to increase the capacity of the holder as bobbins accumulate in the latter.

3. In a weft replenishing loom having a support extending laterally therefrom, a holder mounted on the support for back and forth movement relatively thereto and normally in backward position, a cloth bobbin receiving bag supported by said frame and extending rearwardly of 45 said support, and extensible means supporting the bottom of said bag and effective when the bag is empty to hold said bottom at a level above said support and permit said bottom to move downwardly to a position behind said support as 50 bobbins accumulate in the bag while the frame is in normal backward position.

4. In a weft replenishing loom having a support extending laterally therefrom, a frame mounted on said support for movement back- 55 wardly and forwardly relatively thereto, a cloth bobbin receiving bag supported by said frame and extending rearwardly of said support when the frame is in normal position with respect to said support, a rigid bottom for said bag, and extensi- 0 ble means secured to the bag and connected to said bottom and normally effective when the bag is empty to hold said bottom above the level of said support, said means permitting lowering of said bottom against the action of said means when the frame is in normal position to a position behind the support due to weight of bobbins which accumulate in the bag.

5. In a weft replenishing loom having a support extending laterally therefrom, a bobbin receiver including a rigid frame to be mounted on said support and movable rearwardly with respect thereto to normal position, a bobbin holder mounted on said frame and having a bottom, and extensible means connected to the bottom nor- 75 mally effective to hold said bottom above said support when the holder is empty and the frame is moved rearwardly to 'said normal position, said extensible means thereafter permitting lowering of said bottom to a position behind said support due to the weight of bobbins which accumulate in said holder.

6. In a weft replenishing loom having a support extending laterally therefrom, a rigid frame to be mounted on said support and movable rearwardly to normal position with respect to the support, a flexible bobbin holder mounted on said frame and having a bottom, and means connecting said bottom to parts of said holder above said bottom and normally effective when the holder is empty and the frame ismoved to said normal position to hold said bottom above said holder, said means being thereafter effective to permit lowering of said bottom to a position behind said support due to the weight of the bobbins which accumulate in said holder.

7. In a weft replenishing loom having a support extending laterally therefrom, a frame to be mounted on the support and then moved rearwardly relatively to the latter to normal po n, a cloth bobbin receiving bag mounted on said frame and having a bottom, and elastic means connected to said bag and said bottom normally effective when the bag is empty to hold said bottom above the level of said support when the frame is moved to said normal position, said elastic means thereafter permitting descent of said bottom to a position below the top of said support to increase the capacity of said bag as bobbins accumulate in the latter.

8. In a weft replenishing loom having a support extending laterally therefrom, a rigid frame to be mounted on the support and then moved rearwardly to normal position with respect to said support, a cloth bobbin receiving bag mounted on said frame, a rigid plate forming the bottom of said bag, and elastic means attached to said bottom and to the bag at points above said bottom and normally effective when the bag is empty to hold said bottom at a level above said support when the frame is moved to said normal position, said elastic means thereafter stretching to permit descent of said bottom to increase the capacity of said bag due to the Weight of bobbins which accumulate in said bag.

9. A bobbin receiver for a weft replenishing loom having a support for the receiver, said receiver having side walls and a bottom movable vertically with respect to said walls when the receiver is on said support, and extensible means connecting said bottom to said side walls and normally effective to hold said bottom in relatively high position when the receiver is on said support and is empty but extensible to permit lowering of said bottom to increase the capacity of the receiver when bobbins accumulate in said receiver.

10. In a bobbin receiver for a weft replenishing loom, a rigid frame, a cloth bag attached to said frame and having a bottom capable of assuming a plurality of vertical positions relatively to the frame when the latter is upright, and extensible means connecting said bottom to said bag and normally effective to hold said bottom in relatively high position when the bag is empty but stretching to permit descent of said bottom when bobbins accumulate in said bag to increase the capacity of the latter.

11. A bobbin receiver for a weft replenishing loom having a support for the receiver, said receiver having upper parts defining a bobbin receiving mouth and having a bottom movable to different distances from said mouth, and elastic means mounting said" bottom for downward movement relatively to the mouth when the receiver is on said support to increase the capacity of the receiver when bobbins accumulate in the latter.

RICHARD G. TURNER. 

